:root {
  --primary-color: #0066cc;
  --primary-light: #4c9aff;
  --silver: #f5f5f7;
  --silver-dark: #e5e5e7;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #6e6e73;
  --white: #ffffff;
  --black: #000000;
  --gray-100: #f5f5f7;
  --gray-200: #e5e5e7;
  --gray-300: #d2d2d7;
  --gray-400: #a1a1a6;
  --gray-500: #86868b;
  --gray-600: #6e6e73;
  --gray-700: #424245;
  --gray-800: #1d1d1f;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-sans: 'SF Pro Display', 'SF Pro Text', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body, html {
  font-synthesis: none;
}

.modern-rnd-page {
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 48px;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
}

h2 {
  font-size: 36px;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

h3 {
  font-size: 24px;
  letter-spacing: -0.005em;
  margin-bottom: 12px;
}

p {
  font-size: 17px;
  line-height: 1.5;
  color: var(--text-tertiary);
}

.overline {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--primary-color);
  margin-bottom: 16px;
}

.highlight {
  position: relative;
  color: var(--primary-color);
  z-index: 1;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background-color: rgba(0, 102, 204, 0.1);
  z-index: -1;
  border-radius: 4px;
}

/* Buttons */
.primary-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--primary-color);
  color: var(--white);
  font-size: 17px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 28px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.primary-button:hover {
  background-color: #004c99;
  transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
  display: flex;
  align-items: center;
  min-height: 80vh;
  background: linear-gradient(to bottom right, var(--silver), var(--white));
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.5;
  color: var(--text-tertiary);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-visual {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.5;
}

.visual-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.floating-shape {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
}

.shape-1 {
  width: 300px;
  height: 300px;
  top: 10%;
  left: 10%;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.7), rgba(230, 230, 230, 0.7));
  animation: float 15s ease-in-out infinite;
}

.shape-2 {
  width: 200px;
  height: 200px;
  bottom: 15%;
  right: 15%;
  background: linear-gradient(145deg, rgba(245, 245, 247, 0.7), rgba(220, 220, 225, 0.7));
  animation: float 12s ease-in-out infinite reverse;
}

.shape-3 {
  width: 150px;
  height: 150px;
  top: 40%;
  right: 30%;
  background: linear-gradient(145deg, rgba(235, 235, 240, 0.7), rgba(210, 210, 215, 0.7));
  animation: float 10s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(20px, -20px) rotate(5deg); }
  100% { transform: translate(0, 0) rotate(0deg); }
}

/* Introduction Section */
.intro-section {
  padding: 120px 0;
  background-color: var(--white);
}

.section-header {
  max-width: 800px;
  margin: 0 auto 64px;
}

.center-align {
  text-align: center;
}

.section-intro {
  font-size: 18px;
  line-height: 1.6;
  margin-top: 16px;
  color: var(--text-tertiary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}

.feature-card {
  background-color: var(--gray-100);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background-color: var(--white);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background-color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.feature-icon .material-icons {
  font-size: 28px;
  color: var(--primary-color);
}

/* Outcomes Section */
.outcomes-section {
  padding: 120px 0;
  background-color: var(--silver);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.outcome-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.outcome-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.outcome-card h3 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 16px;
}

.outcome-icon {
  width: 60px;
  height: 60px;
  background-color: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.outcome-icon .material-icons {
  font-size: 28px;
  color: var(--primary-color);
}

/* Research Section */
.research-section {
  padding: 120px 0;
  background-color: var(--white);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 32px;
}

.research-card {
  background-color: var(--gray-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.research-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background-color: var(--white);
}

.card-image {
  height: 180px;
  background-color: var(--primary-color);
  background-image: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  position: relative;
}

.category-pill {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background-color: rgba(255, 255, 255, 0.9);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-color);
}

.card-content {
  padding: 24px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tech-tag {
  background-color: var(--gray-200);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-tertiary);
}

/* Process Section */
.process-section {
  padding: 120px 0;
  background-color: var(--silver);
}

.process-timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 40px;
  width: 2px;
  height: calc(100% - 80px);
  background-color: var(--gray-300);
}

.process-step {
  display: flex;
  margin-bottom: 64px;
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.step-number {
  width: 80px;
  height: 80px;
  background-color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 2;
}

.step-content {
  margin-left: 24px;
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  flex: 1;
}

.process-step:hover .step-content {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--gray-100);
  border-radius: 50%;
  margin-bottom: 16px;
}

.step-icon .material-icons {
  font-size: 20px;
  color: var(--primary-color);
}

/* CTA Section */
.cta-section {
  padding: 120px 0;
  background-color: var(--white);
  background-image: linear-gradient(180deg, var(--white), var(--silver));
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.cta-content h2 {
  margin-bottom: 16px;
}

.cta-content p {
  margin-bottom: 32px;
  font-size: 20px;
}

/* Footer */
.modern-footer {
  padding: 40px 0;
  background-color: var(--gray-800);
  color: var(--white);
  text-align: center;
}

/* Responsive */
@media (max-width: 991px) {
  h1 {
    font-size: 40px;
  }
  
  h2 {
    font-size: 32px;
  }
  
  .hero-section {
    padding: 60px 0;
  }
  
  .intro-section,
  .outcomes-section,
  .research-section,
  .process-section,
  .cta-section {
    padding: 80px 0;
  }
  
  .outcomes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .research-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  h1 {
    font-size: 36px;
  }
  
  h2 {
    font-size: 28px;
  }
  
  .outcomes-grid {
    grid-template-columns: 1fr;
    max-width: 350px;
  }
  
  .research-grid {
    grid-template-columns: 1fr;
  }
  
  .process-timeline::before {
    left: 30px;
  }
  
  .step-number {
    width: 60px;
    height: 60px;
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 32px;
  }
  
  h2 {
    font-size: 21px;
    font-family: "pretendardSemiBold" !important;
  }
  
  .hero-subtitle {
    font-size: 15px;
    font-family: "pretendardRegular";
  }
  
  .section-intro {
    font-size: 14px;
    font-family: "pretendardRegular";
  }

  h3 {
    font-size: 23px;
    font-family: "pretendardSemiBold";
  }

  .feature-card p {
    font-size: 15px;
    font-family: "pretendardRegular";
  }

  .research-card .card-content h3 {
    font-family: "pretendardSemiBold";
  }

  .research-card .card-content p {
    font-family: "pretendardRegular";
    font-size: 13px;
  }
  
  .process-step {
    flex-direction: column;
  }
  
  .step-number {
    margin-bottom: 16px;
  }
  
  .step-content {
    margin-left: 0;
  }

  .section-header .center-align .section-intro {
    font-size: 12px !important;
    font-family: "pretendardRegular";
  }
  
  .process-timeline::before {
    display: none;
  }
}